How to Number Threads on X (Step by Step)
The fastest way to number threads on X/Twitter is The Threadinator. This Chrome extension automatically adds thread numbers and keeps them accurate when your post count changes.
Step-by-step guide
1. Install The Threadinator from the Chrome Web Store
Add The Threadinator to Chrome (or any Chromium-based browser) and pin it so you can open it quickly.
2. Open your thread draft on X/Twitter
Create your thread in the X composer and finish writing your posts before numbering for best results.
3. Click "Add Numbering" once
The extension injects numbering like 1/10, 2/10, and 3/10 across the full thread automatically.
4. Edit safely and re-run numbering
After adding or removing posts, run Add Numbering again to update every index and keep your thread accurate.

FAQ
- Can I number existing threads or only new drafts?
- You can number existing drafts and update thread numbers after edits by clicking Add Numbering again.
- Does this work only in Google Chrome?
- The Threadinator works in Chromium-based browsers including Chrome, Edge, Brave, and Opera.
- What numbering format does the extension use?
- The Threadinator uses the format "number/number " so it can detect and update numbering reliably in future runs.